linux/sound/soc/sof/sof-utils.c

// SPDX-License-Identifier: (GPL-2.0-only OR BSD-3-Clause)
//
// This file is provided under a dual BSD/GPLv2 license.  When using or
// redistributing this file, you may do so under either license.
//
// Copyright(c) 2018-2022 Intel Corporation
//
// Author: Keyon Jie <[email protected]>
//

#include <asm/unaligned.h>
#include <linux/io-64-nonatomic-lo-hi.h>
#include <linux/device.h>
#include <sound/memalloc.h>
#include <linux/module.h>
#include "sof-utils.h"

/*
 * Generic buffer page table creation.
 * Take the each physical page address and drop the least significant unused
 * bits from each (based on PAGE_SIZE). Then pack valid page address bits
 * into compressed page table.
 */

int snd_sof_create_page_table(struct device *dev,
			      struct snd_dma_buffer *dmab,
			      unsigned char *page_table, size_t size)
{ … }
EXPORT_SYMBOL(…);

MODULE_LICENSE(…) …;
MODULE_DESCRIPTION(…) …;